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Configuring the IEEE 802.1p Field for CoS Host Outbound Traffic

This topic provides a summary of the configuration for setting the IEEE 802.1p field in the Ethernet frame header for host outbound traffic (control plane traffic). You can set a global value for the priority code point that applies to all host outbound traffic. Additionally, or alternatively, you can specify that rewrite rules are applied to all host outbound traffic on egress logical interfaces. These are rules that have been previously configured to set the IEEE 802.1p field for data traffic on those interfaces.

Configuration of 802.1p bits is supported only on the following hardware and software components:

  • EX Series switches

  • MX Series 5G Universal Routing Platforms

  • Enhanced Queuing DPCs

  • MPCs

  • Junos OS Release 12.3 or later

To configure the IEEE 802.1p field settings:

  1. (Optional) Specify a global default value for the IEEE 802.1p field for all host outbound traffic.

    See Configuring a Global Default IEEE 802.1p Value for All Host Outbound Traffic.

  2. (Optional) Specify that the IEEE 802.1p rewrite rules for the egress logical interfaces are applied to all host outbound traffic on those interfaces.

    See Applying Egress Interface Rewrite Rules to the IEEE 802.1p Field for All Host Outbound Traffic on the Interface.

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